Joseph Gardner Feltmate of Riverton, N.S., died at the scene as an RCMP officer placed him under arrest for alleged assaults of employees at the Valley View Villa.
Police say the man became unresponsive during his arrest, but have declined to provide further details.
The matter is being investigated by the province's Serious Incident Response Team.
The watchdog agency has said the RCMP officer was attempting to arrest Feltmate under the provisions of the Involuntary Psychiatric Treatment Act.
Ron MacDonald, the agency's director, has declined to comment on what level of force was used during the arrest as that will be part of the investigation.